ORs for relationships between probable depression (HADS >9) and sex, age, physical function, anxiety, pain, school attendance, fatigue score and clinic latency (N=404)
| OR (95% CI), p value | Adjusted OR (95% CI), p value* | |
|---|---|---|
| Age (years) | 0.90 (0.78 to 1.04), p=0.17 | 1.00 (0.84 to 1.18), p=0.96 |
| Female sex | 2.05 (1.20 to 3.51), p=0.01 | 1.82 (1.00 to 3.31), p=0.05 |
| Fatigue (per 3-point increment on Chalder Fatigue Scale)† | 1.75 (1.44 to 2.14), p<0.0001 | 1.26 (1.02 to 1.57), p=0.04 |
| Physical function (per 10-point increment on SF-36 physical function subscale)† | 0.67 (0.60 to 0.75), p<0.0001 | 0.77 (0.67 to 0.88), p<0.001 |
| Pain (per 10 mm increment on Visual Analogue Pain Rating Scale)† | 1.25 (1.15 to 1.36), p<0.0001 | 1.13 (1.03 to 1.25), p=0.01 |
| School attendance of 40% or more | 0.36 (0.23 to 0.56), p<0.0001 | 0.75 (0.44 to 1.28), p=0.28 |
| Duration of illness (months) | 1.00 (0.99 to 1.01), p=0.80 | 0.99 (0.98 to 1.00), p=0.21 |
| Anxiety (per 2-point increment on HADS anxiety subscale)† | 1.40 (1.26 to 1.57), p<0.0001 | Not in model |
*Multivariable analyses, adjusted for all variables in table except HADS anxiety.
†Chalder Fatigue, HADS anxiety, SF-36 physical function and Visual Analogue Pain measures were rescaled to range from 0 to 10. Original scales are: Chalder 0–33; HADS Anxiety 0–21; SF-36 0–100; Visual Analogue Pain 0–100.
HADS, Hospital Anxiety and Depression Scale; SF-36, 36-Item Short Form.